Using these purple metal handcuffs is easy. Simply open the cuffs and place them around your partner's wrists, then click them shut. When it comes to safety, always make sure not to fasten the cuffs too tightly to avoid discomfort or injury. If your partner shows any sign of distress, release the cuffs immediately. For maintenance, keep them in a dry place. You can wipe them with a clean, dry cloth after each use to keep them looking good. Have a great time using these handcuffs but always remember to play safe and respect your partner's boundaries.